Setting up Sli

[RickRuski]

Hi Guys,

Sorry I haven't been too active on the forum lately. The other things to look at is make sure that you don't shut down Inspector when playing COD, (you will have to select the correct profile each time as in my case it reverts to GLOBAL) just minimise it. EVGA Precision tool is a great way of checking that your Sli is operating as it will show: -

Temp of both cards
How the card useage is on both in % (I find that the demand on both cards shifts from one to the other thou not greatly as the graphics demand).
And FPS on both cards.
This tool is available through the EVGA web site and is suitable for all Nvidia cards regardless of manufacturer.

In the Nvidia control panel set Physics option to CPU (this takes the demand off the GPU).

I still have some minor stutter problems but only when down low and mainly over land (hope the coming patches will address a fully working Sli (this was broken prior to release and hasn't been fixed as yet, the profile I am using is a work around until then).

Cheers
Rick

[jimbop]

@KeBrAnTo, RickRuski: Yes, SLI is definitely working while flying with mirrored temps, usage, VRAM usage in EVGA Precision. Just no increase in framerate and increased stutters.

[KeBrAnTo]

Originally Posted by jimbop

@KeBrAnTo, RickRuski: Yes, SLI is definitely working while flying with mirrored temps, usage, VRAM usage in EVGA Precision. Just no increase in framerate and increased stutters.

Hi jimbop, I just started a thread where I wrote down some tips in order to help some people tuning-up their PC's for the sim. http://forum.1cpublishing.eu/showthread.php?t=27762

It doesn't seem to me that you are new to the subject I'm dealing with in that post, but who knows, maybe it could be helpful just to give it a quick read.

S!

[jimbop]

Thanks. Single card is fine with no stuttering and acceptable framerate (e.g. http://forum.1cpublishing.eu/showthread.php?t=25940). I was just wondering if SLI was still 'working' post patch.

[RickRuski]

Hi Jimbob,

Could you post a copy of your profile in Inspector and your Nvidia CP settings. If you are not seeing any improvement in fps have you got v/s enabled? if so fps won't show any higher than your refresh rate. I have had a look at what I am using at the moment in the profile and there is only one change that I have made from the one posted, I will change the profile to reflect the change. It seems to have made a very small improvement for me anyway.

Cheers

Rick

[jimbop]

Originally Posted by RickRuski

Hi Jimbob,

Could you post a copy of your profile in Inspector and your Nvidia CP settings. If you are not seeing any improvement in fps have you got v/s enabled? if so fps won't show any higher than your refresh rate. I have had a look at what I am using at the moment in the profile and there is only one change that I have made from the one posted, I will change the profile to reflect the change. It seems to have made a very small improvement for me anyway.

Cheers

Rick

See end of post for the profile. I usually play with vsync enabled to reduce tearing but not during testing. This is on a clean 285.62 install. The only thing that is not as per your original post is the Sli compatibility bits since CoD is not found in my installation and 0x00000011 refers to a Star Wars game instead. As mentioned above the cards are both working according to EVGA Precision.

These results are for a 30 second average of the same track under SLI and single GPU. The average framerate is higher (14% higher under these conditions) but the stutters and sudden slowdowns make this unplayable for me regardless. This is reflected in the variable minimum framerate in SLI below vs the very stable results for single GPU:



And the video options were:



I will continue to play around with it to see if the stutters can be reduced.

[jimbop]

Update: tinkering with settings can improve framerates somewhat but stutters are inevitable when SLI is enabled, at least on my system. Is anyone managing to get framerate increases without stutters on 285.62?